Patents by Inventor Mikiko Saito

Mikiko Saito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130108853
    Abstract: An object of the present invention is to produce a non-conventional high-quality BNA single crystal. Another object of the present invention is to provide a process for producing the above-described high-quality BNA single crystal. Specifically, the present invention provides a BNA crystal characterized by having a half-value width of diffraction peak X-ray intensity of 100 seconds or less in a rocking curve measurement by X-ray diffraction method.
    Type: Application
    Filed: June 10, 2011
    Publication date: May 2, 2013
    Applicant: RIKEN
    Inventors: Mikiko Saito, Takashi Notake, Hiroaki Minamide, Hiromasa Ito
  • Publication number: 20120282442
    Abstract: There are provided a mold manufacture method capable of easily manufacturing a mold having a nanosized fine structure, and a mold obtained using such method. The mold manufacture method includes: a step of forming a self-assembled film 2 on an inorganic thin film 1 having the fine structure, the self-assembled film 2 being composed of a silane coupling agent having a functional group including at least one of an amino group, a mercapto group, a thiol group, a disulfide group, a cyano group, a halogen group and a sulfonic acid group; a conductive layer formation step of forming a conductive layer 3 on the self-assembled film 2; and a step of forming a metal film 4 on the conductive layer 3 through electroplating.
    Type: Application
    Filed: June 28, 2012
    Publication date: November 8, 2012
    Applicant: Waseda University
    Inventors: Takayuki Homma, Mikiko Saito
  • Publication number: 20110051142
    Abstract: There is provided a novel optical sensor utilizing a surface plasmon resonance technique which is capable of detecting a substance to be detected with high sensitivity independently of a wavelength of irradiated light and is capable of obtaining information, other than a refraction index, on the substance to be detected. At the center of a surface of a metallic film 2 which is formed on a substrate and has no aperture, a circular depression 4 with a diameter of 0.1 to 250 nm is formed and with the depression 4 defined as a center, a plurality of depressions 3 are concentrically formed at intervals of 450 to 530 nm.
    Type: Application
    Filed: March 17, 2009
    Publication date: March 3, 2011
    Applicant: Waseda University
    Inventors: Masahiro Yanagisawa, Takuya Nakanishi, Naonobu Shimamoto, Mikiko Saito, Tetsuya Osaka
  • Patent number: 7173793
    Abstract: A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 ?m. A magnetic recording/reproduction apparatus has this head.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: February 6, 2007
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka, Tsutomu Ishi, Mikiko Saito, Keishi Ohashi
  • Publication number: 20060119982
    Abstract: By inserting a first antistripping layer comprising a first non-magnetic layer 22 and a first conductive layer 23 between a first magnetic layer 16 and a magnetic separation layer 13, adhesion between the first conductive layer 23 and the magnetic separation layer 13 is improved to prevent the first magnetic layer 16 from stripping. In addition, by inserting a second antistripping layer comprising a second non-magnetic layer 24 and a second conductive layer 25 between a second magnetic layer 21 and a magnetic gap layer 17, adhesion between the second conductive layer 24 and the magnetic gap layer 17 is improved to prevent the second magnetic layer 25 from stripping.
    Type: Application
    Filed: January 10, 2006
    Publication date: June 8, 2006
    Inventors: Hiroaki Honjo, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihiro Nonaka, Kazuhiko Hayashi, Nobuyuki Ishiwata
  • Patent number: 7023659
    Abstract: By inserting a first antistripping layer comprising a first non-magnetic layer 22 and a first conductive layer 23 between a first magnetic layer 16 and a magnetic separation layer 13, adhesion between the first conductive layer 23 and the magnetic separation layer 13 is improved to prevent the first magnetic layer 16 from stripping. In addition, by inserting a second antistripping layer comprising a second non-magnetic layer 24 and a second conductive layer 25 between a second magnetic layer 21 and a magnetic gap layer 17, adhesion between the second conductive layer 24 and the magnetic gap layer 17 is improved to prevent the second magnetic layer 25 from stripping.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: April 4, 2006
    Assignee: NEC Corporation
    Inventors: Hiroaki Honjo, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihiro Nonaka, Kazuhiko Hayashi, Nobuyuki Ishiwata
  • Publication number: 20050185339
    Abstract: A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 ?m. A magnetic recording/reproduction apparatus has this head.
    Type: Application
    Filed: August 5, 2004
    Publication date: August 25, 2005
    Inventors: Nobuyuki Ishiwata, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka, Tsutomu Ishi, Mikiko Saito, Keishi Ohashi
  • Publication number: 20040190198
    Abstract: By inserting a first antistripping layer comprising a first non-magnetic layer 22 and a first conductive layer 23 between a first magnetic layer 16 and a magnetic separation layer 13, adhesion between the first conductive layer 23 and the magnetic separation layer 13 is improved to prevent the first magnetic layer 16 from stripping. In addition, by inserting a second antistripping layer comprising a second non-magnetic layer 24 and a second conductive layer 25 between a second magnetic layer 21 and a magnetic gap layer 17, adhesion between the second conductive layer 24 and the magnetic gap layer 17 is improved to prevent the second magnetic layer 25 from stripping.
    Type: Application
    Filed: March 31, 2004
    Publication date: September 30, 2004
    Inventors: Hiroaki Honjo, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihiro Nonaka, Kazuhiko Hayashi, Nobuyuki Ishiwata
  • Patent number: 6795271
    Abstract: A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 &mgr;m. A magnetic recording/reproduction apparatus has this head.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: September 21, 2004
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka, Tsutomu Ishi, Mikiko Saito, Keishi Ohashi
  • Patent number: 6791794
    Abstract: By inserting a first antistripping layer comprising a first non-magnetic layer 22 and a first conductive layer 23 between a first magnetic layer 16 and a magnetic separation layer 13, adhesion between the first conductive layer 23 and the magnetic separation layer 13 is improved to prevent the first magnetic layer 16 from stripping. In addition, by inserting a second antistripping layer comprising a second non-magnetic layer 24 and a second conductive layer 25 between a second magnetic layer 21 and a magnetic gap layer 17, adhesion between the second conductive layer 24 and the magnetic gap layer 17 is improved to prevent the second magnetic layer 25 from stripping.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: September 14, 2004
    Assignee: NEC Corporation
    Inventors: Hiroaki Honjo, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihino Nonaka, Kazuhiko Hayashi, Nobuyuki Ishiwata
  • Patent number: 6780530
    Abstract: A magnetic material includes a main component expressed by a general formula CoNiFeX, wherein X is at least one element selected from the group consisting of Cr, Ti, V, Ru, Rh, Pd, Os, Ir and Pt, and wherein weight percentages a, b, c and d of Co, Ni, Fe and X contents, respectively, in the main component are such that 40%≦a≦10%, 5%≦b≦20%, 10%≦c≦30%, and 0%<d≦10%.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: August 24, 2004
    Assignee: NEC Corporation
    Inventors: Mikiko Saito, Nobuyuki Ishiwata, Tsutomu Ishi, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka
  • Patent number: 6687082
    Abstract: A magnetic head and a manufacturing method of the magnetic head and a magnetic recording and reproducing apparatus used this head, in which the following problem is solved, are provided. A plated film realizing large saturation magnetization Bs about 2T can not realize a high resistivity at the same time, therefore, when this plated film is applied to a magnetic head, the high frequency characteristic is deteriorated. This problem is solved at the present invention. Further, the present invention provides a magnetic head that is low cost and has large saturation magnetization Bs, and has a excellent high frequency characteristic suitable for a high density recording.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: February 3, 2004
    Assignee: NEC Corporation
    Inventors: Nobuyuki Ishiwata, Tsutomu Ishi, Mikiko Saito, Hiroaki Honjo, Shinsaku Saito, Tamaki Toba, Yoshihiro Nonaka
  • Publication number: 20030194581
    Abstract: A magnetic material includes a main component expressed by a general formula CoNiFeX, wherein X is at least one element selected from the group consisting of Cr, Ti, V, Ru, Rh, Pd, Os, Ir and Pt, and wherein weight percentages a, b, c and d of Co, Ni, Fe and X contents, respectively, in the main component are such that 40%≦a≦10%, 5%≦b≦20%, 10%≦c≦30%, and 0%<d≦10%.
    Type: Application
    Filed: May 5, 2003
    Publication date: October 16, 2003
    Applicant: NEC CORPORATION
    Inventors: Mikiko Saito, Nobuyuki Ishiwata, Tsutomu Ishi, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka
  • Patent number: 6592811
    Abstract: A magnetic material includes a main component expressed by a general formula CoNiFeX, wherein X is at least one element selected from the group consisting of Cr, TI, V, Ru, Rh, Os, Ir and Pt, and wherein weight percentages a, b, c and d of Co, Ni, Fe and X contents, respectively, in the main component are such that 40%≦a≦75%, 5%≦b≦20%, 10%≦c≦30%, and 0%≦d≦10%.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: July 15, 2003
    Assignee: NEC Corporation
    Inventors: Mikiko Saito, Nobuyuki Ishiwata, Tsutomu Ishi, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka
  • Publication number: 20030058576
    Abstract: By inserting a first antistripping layer comprising a first non-magnetic layer 22 and a first conductive layer 23 between a first magnetic layer 16 and a magnetic separation layer 13, adhesion between the first conductive layer 23 and the magnetic separation layer 13 is improved to prevent the first magnetic layer 16 from stripping. In addition, by inserting a second antistripping layer comprising a second non-magnetic layer 24 and a second conductive layer 25 between a second magnetic layer 21 and a magnetic gap layer 17, adhesion between the second conductive layer 24 and the magnetic gap layer 17 is improved to prevent the second magnetic layer 25 from stripping.
    Type: Application
    Filed: April 1, 2002
    Publication date: March 27, 2003
    Inventors: Hiroaki Honjo, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihino Nonaka, Kazuhiko Hayashi, Nobuyuki Jshiwata
  • Publication number: 20030012982
    Abstract: A soft magnetic thin film is composed of cobalt (Co) at 40 to 70 weight percent both inclusive, nickel (Ni) at 2 to 20 weight percent both inclusive, and iron (Fe) at 15 to 40 weight percent both inclusive. The soft magnetic thin film has a film density of 7.4 grams/cc or greater.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 16, 2003
    Applicant: NEC CORPORATION
    Inventor: Mikiko Saito
  • Patent number: 6507464
    Abstract: A Co—Fe—Ni magnetic film has a composition represented by a chemical formula of CoxFeyNiz (50≦x≦80, 20≦y≦40, and 3≦z<10 (wt %)) and has an average grain size not greater than 40 nm. The Co—Fe—Ni magnetic film is prepared by electroplating. A magnetic head comprises the magnetic film as a magnetic pole layer. A magnetic memory device comprises a combination of the magnetic head and a magnetic recording medium having a high coercive force between 3500 and 7000 Oe, both inclusive.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: January 14, 2003
    Assignee: NEC Corporation
    Inventors: Keishi Ohashi, Mikiko Saito, Tamaki Toba
  • Patent number: 6466416
    Abstract: Disclosed is a magnetic heads suitable for high density recording which comprises an ID head where a CoNiFe film or a CoNiFeX film is formed by a physical vapor deposition method and further a plated film of CoNiFe etc. is formed while avoiding vanishment of a seed layer. The ID head shows high reliability and high production efficiency. The upper magnetic pole of the ID head is composed of a laminated layers of a first magnetic layer 13 of a CoNiFe film or a CoNiFeX film which is formed by a physical vapor deposition method, a second magnetic layer 14 of NiFe layer composing a seed layer laminated thereon, and a third magnetic layer 11 of CoNiFe plated film etc. further laminated on the second layer.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: October 15, 2002
    Assignee: NEC Corporation
    Inventors: Hiroaki Honjo, Nobuyuki Ishiwata, Tsutomu Ishi, Mikiko Saito, Shinsaku Saito, Tamaki Toba, Yoshihiro Nonaka
  • Publication number: 20020056649
    Abstract: A method of fabricating a thin magnetic film composed of Co—Ni—Fe alloy, includes the step of plating an object with plating solution containing Co ions, Ni ions and Fe ions. The plating solution is kept at 20 degrees centigrade or lower while the object is being plated while the object is being plated.
    Type: Application
    Filed: September 18, 2001
    Publication date: May 16, 2002
    Applicant: NEC CORPORATION
    Inventor: Mikiko Saito
  • Publication number: 20010053045
    Abstract: A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 &mgr;m. A magnetic recording/reproduction apparatus has this head.
    Type: Application
    Filed: December 27, 2000
    Publication date: December 20, 2001
    Inventors: Nobuyuki Ishiwata, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka, Tsutomu Ishi, Mikiko Saito, Keishi Ohashi